A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5910-00-663-5865
NSN 5920-00-538-7915
NSN 6610-01-203-8098
NSN 5935-01-543-4248
NSN 5915-00-757-9875
NSN 6135-00-056-6863
NSN 6620-01-106-3553
NSN 5910-01-424-8457
NSN 6135-00-276-7625
NSN 6110-01-411-6660
NSN 5998-01-296-7603
NSN 5990-01-529-4679